I dug up these up from other forums as recommended local detailers.
http://www.northwestautosalon.com
http://www.metropolitandetail.com
http://bradleysdetail.com
The first is quite expensive (and highly recommended), the other two less expensive but expensive none the less.
So maybe I'll end up doing it myself. I'm not sure I can justify the cost of a detail every 3 or 4 months. It could get pretty expensive. Or maybe I'll mix it up, have a pro do it once a year and see if I can maintain it the rest of the year.